Presser-foot for sole-stitching mechanism.



H. MIGHELSBN.

PRBssBR FOOT PoR soLPl STITCHING MBoHANrsMs.

' APPLICATION FILED, APB.22, 1910.

989,511. Patented Apr. 11, 1911 FL'Lj.

sieri.,

HANS MICHELSEN, OEMINNEAPOLIS,`MINNESOT.

PRESSER-FOOT FOR SOLE-STITCHING MECHANISMS:

Specification of Letters Patent.

Patented Apr. it,

Application led April 22, 1910. Serial No. 556,968.

State of l\'Iinnesota, have invented certain new and useful Improvements in Presser- `Feet for Sole-Stitching Mechanisms; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to ina-ke and use the lily invention has for its object to providel an improved presser foot for a shoe sole stitching` mechanism and, to this end, it conof the novel construction and arrangement ot parts hereinafter described and delined in `the claims.

Particularly, this invention is designed an improvement on the improved presser foot disclosed and broadly claimed in my prior co-pending application S. N. 524,813, tiled October 27th, 1909, and allowed April 8th, 1910. In the said prior application, `the improved presser foot was provided with a so-called toe extended obliquely across the stitching` line at the rear of the needle and engageablc with the uptnrncd rib of a stitching' crease and operative thereon to press the said rib back into the crease over the formed stitches. The present improved presser foot not only accomplishes this result, but is further provided with a crease forming chisel or wedge blade located in Jfront of the needle and adapted to form the crease for the stitches.

ln the accompanying,- drawings, which illustrato my invention, like characters indicate like parts throughout the several views. l.

ReferringA to the drawings, Figure l is a view in side elevation, showing portions of the sewing machine with my improved presser toot applied thereto, some parts bcingiseetioned and some parts being broken away; Fig. 2 is a horizontal section taken on the line m2 m2 of Fig. l; and Fig. 23 is an enlarged vertical section taken en the line mi m3 of Fig. 2.

Ot the' parts of the machine, the numeral l indicates the presser bar,- the numeral 9. the needle bar, the numeral 3 a guide for the parts l and 2, the numeral i the presser foot,

the numeral 5 the needle, and the numeral G the needle plate, which latter may be assumed to be connected in the customary way to the so-callcd machine cap, not shown.

T he character o indicates an ordinary shoe sole, the vamp oit the shoe not being illustrated. A

The stitchingcrease is indicated by the character o, the same, when open, being formed by upturned ribs b1.

in Fig.v 1, the stitches are indicated at. c.

The improved presser foot, as preferabiy formed, is provided with a relatively long toe 'T and a relatively short toe 8, the under surfaces of both of which lie in the saine plane and are adapted t0 ei'igage with'the fiat upper surface ofthe sole a. The inner edge of the short toe 8 extends oblioaclyr from and in respect to the rib o so that, as the work 2 is moved. rearward, the said toe will close the said rib over the stitches and close the crease. As shown in Fig. 2, the inner cdgeo'f the short toe 8 is thus made oblique by rounding the same at Se in the vicinity1 ot the point where it oins the lower end of the presser toot 1i, but l course, limit myself to this exact way of making the said edge o'lI the short toe 8 ohliqne in respect to the .line ot crease 'formed by the blade 9. y

Just infront of the needle,the crease 'tormifig chisel or wedge blade t) is rigidly secured to the long toe 7, preferably by a small screw l0. This chisel t), at its iront and lower edges, is very sharp and is wedge.- shapcd so that, when forced into the ieather of the sole, it will ont a proper stitching crease, When thc machine is inaction, the presser t'oot is, as is well. known, intermittently and rapidly raised and, lowered and, for this reason, thelower edge of the chisel or biadc 9 should be made sharp and wedgeshaped.

What i claim is:

l. ln a stitching' mechanism, a presser toot provided in front of the needle with a crease forming chisel or blade, and provided with an oblique crease closing edge located at the 'rear ot the needle and entirely above the exposed operative portion ot said chisei blade, substantially as described.

2. ln a stitching mechanism, a prcsserfoot having` a relatively longand relatively short do not, oi"

toe, and a chisel o1' wedge blade applied to the said long toe in front 0f the needle, the seid short toe being located at the rear of the needleand serving to close the crease fol-lined by said chisel, after the stitches have been formed in the crease, substantially as described.

In testimony whereof I aflx my signature 1n presence of two x'vltnesses.

HANS MICHELSEN. Witnesses ALICE V. SWANSON, HARRY D. KILGORE. 

